Vacuum-tube adapter



June 17 1924. 1,498,500

F. WlLHELM ETSAL VACUUM TUBE ADAPTER Filed April 11, 1922 WITNESSES INVENTORS TredericJC WLW' u Willi/a21 5 6 71,11) an'z A TTORNE Y S Patented June 17, 1924.

umrao 'srar'as PATENT OFFICE. I

' FREDERICK winnmu AND WILLIAM sonwaaz, or NEW YORK, N. Y.

VACUUM-TUBE anarrm.

Application filed April 11, 1922. Serial No. 551,641.

T all whom it may concern: Be it known that I, FREDERICK WILHEL I andWILLIAM SoHwARz, both citizens of the United States, and residents of the city of New York, borough of the Bronx, in the county of Bronx .and State of New York, and of the city of New York, borough of Manhattan, in the county and State of New York, respectively, have invented new [and useful Improvements in Vacuum-Tube Adapters, of which the following is a full,

clear, and exact description.

. cated and providing means in the tube ing for contacting with the contact ter-f- This invention relates to. adapters primarily designed for connectin the various types and sizes of vacuum bulbs into the receiving and transmittingcircuits of wirelesssets provided with a standard base for gecleiving the particular type of vacuum In practice, inwireless receivingcircuits,

a particular standard contact base is provided which is connected into the circuitand adapted to receive a vacuum tube provided with four contact studs on its base, This.

This object is accomplished by providing-1v a casing in which vacuum tubes may be lol minals of the tubes and electrically connecting them to contact studs mounted on the casing and adapted to project into the standard base connecting the vacuum tubes into the circuit.

This and other objects of the invention will be more clearly understood from the following detailed description and accompanying drawings;

Figure 1 is a top plan view of the adapter;

Figure 2 is a section along the line 22, Figure 1; 2

Figure 3 is an end view of the adapter as viewed from the top inFigure 1;

Figure 4 is an end view of the adapter asviewed from they bottom in Figure 1;

Referring to the above mentioned drewthe ings, a casing 10 is shown rovided with a channel or chamber 11. ounted in the chamber 11 and attached to the casing are four spring contacts 12 to 15, inclusive. Each spring contact has a depression 16 formed therein near its outer end, into which one of the terminals 17 of the vacuum tube -18 fits. These spring contact terminals 12 to 15, inclusive, are connected by means'of conductors 19 to 22, inclusive, to the. contact studs 23 to 26, inclusive, respectively. Thus when the vacuum tube 18 is mounted in-'the adapter each terminal 17 is connected to one of the'contact studs 23 to26, inclusive.

The adapter was designed for use with wireless receiving and transmitting circuits. In order to mount a vacuum tube in a receiving or transmitting circuit, a socket carrying a plurality of contact members is first connected intothe circuit. The contact studs 23 to 2.6 mounted in the casing 10 are so arranged that when the end of the easing 10 is projected into the socket they contact with the contact members carried by" the socket. Thus when the casing is mounted in'the socket the vacuum tube is connected with thetop members provided in the socket and into the receiving or transmitting circuit,

The-construction of the adapter may be greatly varied so as to accommodate any Size or type of vacuum tube.

In the case described above, the shape of the adapter is cylindrical being adapted to receive a cylindrical-shaped tube and an opening 27 is provided in the wall of the adapter to receive the nipple through which the air has been exhausted from the tube.

The casing-of the adapter may be made from a variety of materials. The conductors which connect the spring contact terminals 12 to 15, inclusive, with the contact studs 23 to 26, inclusive, respectively, may either be embedded in the casingor located in the chamber 11. If the casing 10 is cast a good construction would be obtained by embedding the conductors in the body of the casing.

We would state in conclusion that while the illustrated example constitutes a practical embodiment of our invention, do not limit ourselves strictly to the exact details herein illustrated since manifestly the same can be considerably varied without departing from the spirit of the invention as defined in the appended claims.

' Claims:

1. Anladapter for vacuum tubes comprising 'a casing having a chamber adapted to receive the vacuum tube in protective relation, one end of the casing being shaped to fit a socket, contact studs mounted in the shaped end of the casing and projecting therefrom, 'means in the chamber and carried by the casing for removably gripping and supporting the vacuum tube and establishing electrical connection with the vacuum tube terminals, and means for electrically connecting said contact establishing means of the tube with the contact studs projecting from the shaped ends of the casing.

, 2. An adapter for vacuum tubes comprising a casing having a chamber adapted to receive the vacuum tube in protective relation, one. endof the casing being shaped to. fit a socket, contact s'tuds mounted in the shaped end ofthe casing and projecting therefrom, spring clips mounted in the chamber ofthe casing forremovably gripping and supporting the vacuum tube and establishing electrical connection with the vacuum tube terminals, and means'imbed--? connecting said contact establishing means of the tube with the contact studs projecting from the shaped ends of the'casing.

3. An adapter for vacuum tubesgcompns ing a casing having a chamber'adapted to .receive the vacuum tube in protective relaprojecting from the shaped ends of the 'casing, said casing having. an opening formed therein for receiving the exhaust-nipple of the vacuumtubeadapted to protect it.

- FREDERICK WILH-ELM.

WILLIAM SOHWARZ.

died in the wallet the casing for electrically 

